So I'm building a new PC and will have my old system with a 3770K sitting there with nothing to do. I wanted to turn it into a server that would facilitate with Storage, Plex, and other such utilities. What would be best for doing this stuff taking cost out of the factor? I can get a license for any of these. Should I alternatively run ESXi with FreeNAS handling the storage and Windows8.1/10 or 2012 handling the server functions like Plex?